
	Where results make sense

Topic: Diffuse nebula

Related Topics

Reflection nebula

Nebula

Orion Nebula

Astronomical object

Supernova 1987a

Shakespeare

Elizabethan Age

Romeo and Juliet

In the News (Wed 10 Feb 10)

Northern Trust

Marvin Harrison

Peter Chernin

Gary Locke

Match Play

Penelope Cruz

Mickey Rourke

AR Rahman

Danny Boyle

Hugh Jackman

	Diffuse Nebulae
		Diffuse nebulae, sometimes inacurately referred to as gaseous nebulae, are clouds of interstellar matter, namely thin but widespread agglomerations of gas and dust.
		The first diffuse nebula discovered was the Orion Nebula, M42, observed telescopically in 1610 by N.
		Diffuse nebulae were longly be considered as distant, unresolved star clusters or star clouds, until in the 1860s spectroscopy revealed their gaseous nature by showing line spectra, in particular due to the pioneering research of William Huggins.
	www.seds.org /messier/diffuse.html (547 words)

	Diffuse nebula (Site not responding. Last check: 2007-10-22)
		In astronomy, diffuse nebulae is the common term for both reflection nebula e and emission nebula e.
		Nebula, USS The USS Nebula, has recently been upgraded to a Solar-II Class Starship and is part of Task Force Zinderneuf, Silver Fleet.
		Diagnosis of Diffuse Lung Disease A multimedia textbook on the diagnosis of diffuse lung diseases as manifested in the secondary lobule of the lung.
	www.serebella.com /encyclopedia/article-Diffuse_nebula.html (237 words)

	Nebulae
		Diffuse nebulae are clouds of interstellar matter, namely thin but widespread agglomerations of gas and dust.
		These nebulae quickly expand and fade while their matter is spread in the interstellar surroundings.
		They are distinguished from diffuse nebula mainly because they happen to be not illuminated by embedded or nearby stars.
	www.seds.org /messier/nebula.html (731 words)

	NASA - Nebula
		A nebula (NEHB yuh luh) is a cloud of dust particles and gases in space.
		Diffuse nebulae are the larger of the two types.
		If a diffuse nebula occurs in an area that has no nearby stars, it neither emits nor reflects enough light to be visible.
	www.nasa.gov /lb/worldbook/nebula_worldbook.html (563 words)

	Vern’s Weblog » Diffuse Nebula
		The Orion nebula is the brightest nebula visible from Earth and is always a treat to visit in a scope of any size or binoculars. In this image, M42 is the bright butterfly shape surrounding the trapezium.
		The veil nebula is quite large (230 x 160 arc-minutes) and has various catalogue designations (6992, 6995, 6960, 6970, etc.) as it was not known that the faint portions were part of one object.
		The flame nebula (NGC 2024) and horsehead nebula (Barnard 33)
	www.raben.com /weblog/category/astronomy/deep-sky/diffuse-nebula (792 words)

	GARY'S HOME PAGE
		Emission nebulae are usually red in color because the majority of atom emissions from hydrogen appear as red.(various colors are produced by other atoms, but hydrogen atoms are the most prominent, and abundant, atoms in emission nebulae) Emission nebulae appear at the locations of recent and ongoing star formation.
		Diffuse nebulae are clouds of interstellar matter, namely thin but widespread collections of gas and dust.
		Other Diffuse Nebulae are as follows: The Lagoon Nebula; the Omega Nebula; the Trifid Nebula; the de Mairan's Nebula; and a diffuse Reflection Nebula.
	www.du.edu /~gjlee/final.html (1632 words)

	Messier Object 78 (Site not responding. Last check: 2007-10-22)
		M78 is the brightest diffuse reflection nebula in the sky.
		Together with some other nebulae, including NGC 2024 (Orion B) near Zeta Orionis (sometimes called the Flame Nebula), all these nebulae are associated with the molecular cloud LDN 1630 (from Lynds' Catalogue of Dark Nebula), a part of the Orion complex.
		As a reflection nebula, M78 is a cloud of interstellar dust which shines in the reflected and scattered light of bright blue (early B-type) stars, among them the brightest, HD 38563A, and second-brightest HDE 38563B, both of about 10th visual apparent magnitude.
	www.obspm.fr /messier/m/m078.html (709 words)

	Gary & Jake - Astronomical Glossary
		Diffuse nebula -- Diffuse nebulae are clouds of dust and gas in interstellar space, several light years across.
		Diffuse nebulae can be further broken down into emission nebulae and reflection nebulae.
		Nebula -- Nebulae (plural of nebula) are large interstellar clouds of dust and gas.
	www.garyandjake.com /glossary.php (675 words)

	Nebula, Orion Nebula, Crab Nebula, Nebulas, Planetary Nebula at SPACE.com
		Nebulas are generally classified according to the degree of luminosity.
		Diffuse nebulas consist of reflecting nebulas, emission nebulas, and dark nebulas.
		Prior to the invention of research tools like the telescope, the term nebula was used to describe any celestial object with a diffused appearance, as a result many objects now known to be star clusters or galaxies were originally classified as nebulas.
	www.space.com /nebulas (338 words)

	M42 NCG1976 - Orion Nebula
		After the Great Nebula in Andromeda, the Orion Nebula is probably the most famous.
		Although commonly classified as the brightest diffuse nebula in the sky, visible to the naked eye, it is, in fact, both an emission and reflection nebula, with hydrogen (mostly) and oxygen gas shining due to being excited by the ultra violet radiation from the central star in Orion's sword.
		To the unaided eye, M42 appears as a misty patch around theta Orionis, the central star of the three which form the sword of Orion.
	www.r-clarke.org.uk /messier/m42.htm (142 words)

	Diffuse Nebulae
		Diffuse nebulae, sometimes inacurately referred to as gaseous nebulae, are clouds of interstellar matter, namely thin but widespread agglomerations of gas and dust.
		Diffuse emission nebulae are often called H II regions because they are mainly consisted of ionized hydrogene, H II - the roman number after the element symbol (here H) designating the ionization level: `I' would stand for neutral atoms, the `II' here means first ionization, i.e.
		Diffuse nebulae were longly be considered as distant, unresolved star clusters or star clouds, until in the 1860s spectroscopy revealed their gaseous nature by showing line spectra, in particular due to the pioneering research of William Huggins.
	seds.lpl.arizona.edu /messier/diffuse.html (547 words)

	Filter comparison
		M20 TRIFID NEBULA (diffuse emission/reflection nebula in Sagittarius) DEEP-SKY: (2) Small difference between filtered and unfiltered views with a slight gain in contrast with the filter, but with any light pollution, the filter may be of greater use.
		NGC 2237-9 "ROSETTE NEBULA" (diffuse nebula in Monoceros).
		CRESCENT NEBULA (NGC 6888) (diffuse nebula in Cygnus).
	pages.sbcglobal.net /raycash/filters.htm (6827 words)

	Chandra :: Photo Album :: Crab Nebula :: What Do These Images Tell Us? :: 28 Sep 99
		The Crab Nebula consists of a pulsar, a rapidly rotating neutron star at the center, surrounded by a bright diffuse nebula.
		Both the nebula and the pulsar are bright sources of radiation in all wavelengths.
		The X-ray nebula shown in the Chandra image is about 40% as large as the optical nebula, which is in turn about 80% as large as the radio image.
	chandra.harvard.edu /photo/0052/what.html (412 words)

	Types of Nebulae
		Reflection nebulae are clouds of dust which are simply reflecting the light of a nearby star or stars.
		Reflection nebulae and emission nebulae are often seen together and are sometimes both referred to as diffuse nebulae.
		Dark nebulae are clouds of dust which are simply blocking the light from whatever is behind.
	astro.nineplanets.org /twn/types.html (667 words)

	Nebula
		These are my drawings and/or CCD images of nebula, both diffuse and planetary, in the Messier Catalog.
		This is probably the most famous diffuse nebula.
		This image is a set of 20 - 20 second snaphots in Track & Accumulate mode taken at f/6.3 on June 8, 1997.
	www.dharmaworks.net /Astronomy/nebula.html (375 words)

	AllRefer.com - Crab Nebula (Astronomy, General) - Encyclopedia
		Crab Nebula, diffuse gaseous nebula in the constellation Taurus; cataloged as NGC 1952 and M1, the first object recorded in Charles Messier's catalog of nonstellar objects.
		It is the remnant of a supernova that was observed in 1054 by Chinese and Arab astronomers to be as bright as Venus; markings in northern New Mexico depict a star near a crescent moon that might be a record of this supernova.
		The nebula is also a strong emitter of X rays.
	reference.allrefer.com /encyclopedia/C/CrabNebu.html (324 words)

	APOD Search Results for "diffuse nebula" (Site not responding. Last check: 2007-10-22)
		Dubbed the Angel Nebula by astronomer Steve Mandel's 13 year old son, the dusty apparition is part of an expansive complex of dim and relatively unexplored diffuse nebulae, traced over large regions seen toward the North and South Galactic poles.
		The blue nebulae are primarily reflection nebulae, clouds of gas and fine dust reflecting the light of nearby bright stars.
		The center of this region is being evacuated by the wind of the brightest star in the nebula.
	antwrp.gsfc.nasa.gov /cgi-bin/apod/apod_search?diffuse+nebula (4059 words)

	NebulaeDrawings (Site not responding. Last check: 2007-10-22)
		Nebulae have been observed for many centuries, either with the naked eye, with ancient and archaic equipment, or with modern quality telescopes.
		Other nebulae are virtual stellar nurseries — massive and complex gatherings of dust and gas, in which stars are being born under gradual but tumultuous circumstances.
		This fan shaped nebula is associated with R Monocerotis, a massive young star at the nebula's apex.
	www.belmontnc.4dw.net /nebulae.htm (2949 words)

	Lagoon Nebula (M8) June 29, 2002 (Site not responding. Last check: 2007-10-22)
		The Lagoon Nebula is a summertime naked-eye diffuse nebula in our Milky Way Galaxy.
		The Lagoon Nebula itself was discovered by Le Gentil in 1747.
		The cluster, NGC6530 is an extremely young open cluster which was formed from the material of the Lagoon Nebula, and it is situated well within this diffuse nebula.
	www.whiteoaks.com /sketches/lagoon.html (190 words)

	Knisley (Site not responding. Last check: 2007-10-22)
		M20, TRIFID NEBULA:(diffuse emission/reflection nebula in Sagittarius) DEEP-SKY: (2) Small difference between filtered and unfiltered views with a slight gain in contrast with the filter, but with any light pollution, the filter may be of greater use.
		Nebula really stands out with some filamentary detail.
		NGC 7129-33:(Diffuse Nebula in Cepheus) DEEP-SKY: (2) slight increase in contrast, with a faint haze visible around a central group of 4 to 6 stars.
	web.tampabay.rr.com /smilner/sherrod1/knisley.htm (6841 words)

	Carl Christensen
		M1 The Crab Nebula supernova remnant in Taurus.
		M8 The Lagoon Nebula diffuse nebula in Sagittarius.
		M78 Diffuse nebula, a reflection nebula, in Orion.
	www.geocities.com /carlc93906/Carl/carl.html (255 words)

	Messier Object 43 (Site not responding. Last check: 2007-10-22)
		Diffuse Nebula M43 (NGC 1982), an emission and reflection nebula, in Orion
		M43 is actually a part of the Great Orion Nebula, M42, which is separated from the main nebula by an impressive, turbulent dark lane.
		The nebula itself is a fine view even in a 4-inch.
	www.moonguy.com /messier/m/m043.html (263 words)

	Messier Object 43 (Site not responding. Last check: 2007-10-22)
		Difuzna meglica - Diffuse Nebula M43 (NGC 1982), an emission and reflection nebula, in orion
		It was first reported by de Mairan in 1733 as a "brilliance surrounding a star" which he thought was "very similar to the atmosphere of our Sun, if it were dense enough and extensive enough to be visible in telescopes at a similar distance".
		The diffuse nebula M43 surrounds the irregular young "nebula variable" NU Orionis (HD 37061, attn: Not "nu Orionis") of magnitude 6.5-7.6 and spectral type BIV.
	www2.arnes.si /~gljsentvid10/messier/M043.HTM (242 words)

	APOD: 2000 January 11 - The Rosette Nebula in Hydrogen, Oxygen, and Sulfur (Site not responding. Last check: 2007-10-22)
		Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
		NGC 2244 has cleared a hole in the nebula's center.
		fast-moving molecular knots in the Rosette Nebula remains under investigation.
	antwrp.gsfc.nasa.gov /apod/ap000111.html (103 words)

	M42 Orion (Great) Nebula, M43 De Mairan's Nebula and Trapezium Stars (Site not responding. Last check: 2007-10-22)
		In fact the nebula's details are illuminated (and heated) by these four stars.
		The M43 is a diffuse nebula that actually forms a part of the Orion Nebula.
		Orion Nebula description from SED - Contain among other details description on the discovery of the nebula and the Trapezium stars.
	www.science-park.info /astronomy/stellar/more/ori_m42.html (531 words)

	Messier Object 8
		This feature occurs in a region where a vivid star formation process appears to take place currently; the bright emission is caused by heavy excitation of very hot, young stars, the illuminator of the hourglass is the hot star Herschel 36 (mag 9.5, spectral class O7).
		Closely by this feature is the apparently brightest of the stars associated with the Lagoon Nebula, 9 Sagittarii (mag 5.97, spectral class O5), which surely contributes a lot of the high energy radiation which excites the nebula to shine.
		The young open cluster NGC 6530 associated with the Lagoon Nebula M8 was classified as of Trumpler type "II 2 m n" (see e.g.
	www2.arnes.si /~gljsentvid10/messier/M008.HTM (507 words)

	Diffuse nebula - Wikipedia, the free encyclopedia
		In astronomy, diffuse nebulae is the common term for both reflection nebulae and emission nebulae.
		They are diffuse as opposed to the non-diffuse dark nebulae.
		This page was last modified 12:24, 14 October 2005.
	en.wikipedia.org /wiki/Diffuse_nebula (51 words)

	APOD: 2004 September 27 - The Great Nebula in Orion (Site not responding. Last check: 2007-10-22)
		Orion Nebula to be a busy neighborhood of young stars, hot gas, and dark dust.
		The power behind much of the Orion Nebula (M42) is the Trapezium - four of the brightest stars in the nebula.
		Many of the filamentary structures visible are actually shock waves - fronts where fast moving material encounters slow moving gas.
	antwrp.gsfc.nasa.gov /apod/ap040927.html (144 words)

Try your search on: Qwika (all wikis)